Grok 4 Fast
| Released | 2025-09-19 |
|---|---|
| Price per 1M | Not listed |
| Overall score | 50.8 (early, few results) |
| Provider | xAI |
| Weights | Proprietary |
Scores
| Dimension | Score | Rank | Benchmarks |
|---|---|---|---|
| Overall: Balanced | 50.8 | 4 | |
| Overall: Coding | 50.7 | 4 | |
| Overall: Reasoning | 50.8 | 3 | |
| Overall: Agentic work | 50.7 | 4 | |
| Agents | 50.7 | 1 | |
| Reasoning | 50.8 | 3 |
Configurations
| Configuration | Balanced | Benchmarks |
|---|---|---|
| Unspecified setting | 46.5 ±9.2 | 3 |
| High | 50.7 ±6.1 | 1 |
| Thinking | 51.4 ±9.4 | 1 |
Evidence
Agents 50.7 ±3.4
| Benchmark | Result | Source | Date |
|---|---|---|---|
| tau2-bench Banking Knowledge | 15.7% | tau2-bench | 2026-05-05 |
Reasoning 50.8 ±4.3
| Benchmark | Result | Source | Date |
|---|---|---|---|
| ARC-AGI-2 | 5.3% | Epoch AI | 2026-11-11 |
| ARC-AGI-1 | 48.5% | Epoch AI | 2026-11-11 |
| Kagi Reasoning Benchmark | 66.1% | Kagi | 2026-11-11 |
Results not used in the score
| Benchmark | Result | Source | Why not used |
|---|---|---|---|
| Kagi Reasoning Benchmark | 35.4% | Kagi | A stronger configuration result was used |
Names matched to this model
grok-4-fast